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  1. #1
    Junior Member Eris lleshi's Avatar
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    Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Code

    SC144
    Description

    SBU Communication Error When the machine was switched on, or when the machine returned to full operation from the energy save mode, the machine could not access the SBU register, or the SBU register values are abnormal. Note: The ASIC IDs read during automatic adjustment of the SBU can be displayed with SP4600 (SBU Version Display).
    Causes

    SBU-BCU harness loose, disconnected, defective SBU board defective SIOB board defective BCU board defective

    while the scaner do not turn on and can not put into operation it's off
    i think it's a relay voltage but i can't find in SBU or i don't know
    please help me!

  2. #2
    Trusted Tech 50+ Posts
    Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    GIUBOSS's Avatar
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    Re: Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    I would disconnect the ardf to see if it still reports the error code, so think of the damaged bcu ...

  3. #3
    Service Manager 2,500+ Posts
    Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Phil B.'s Avatar
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    Re: Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Quote Originally Posted by GIUBOSS View Post
    I would disconnect the ardf to see if it still reports the error code, so think of the damaged bcu ...
    I do think, that will throw it's own specific ecode...but it's a start

  4. #4
    Service Manager 2,500+ Posts
    Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Phil B.'s Avatar
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    Re: Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Quote Originally Posted by Eris lleshi View Post
    Code SC144

    Causes:

    SBU-BCU harness loose, disconnected, defective SBU board defective SIOB board defective BCU board defective

    while the scaner (scanner) do(es) not turn on and cannot put into operation it's off

    ** operation ? ** some codes will not allow functions.. but TECHS can enter Service/Tech mode ...can you access Tech Mode?

    i think it's a relay voltage but i can't find in SBU or i don't know
    please help me!
    ** if you have a true service manual.. the circuit layout is in there **

  5. #5
    Junior Member Eris lleshi's Avatar
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    Re: Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    Quote Originally Posted by GIUBOSS View Post
    I would disconnect the ardf to see if it still reports the error code, so think of the damaged bcu ...
    Where is the BCU please (the scanner motorr turn on with output ,but the exposure lamp no)

  6. #6
    Field Supervisor 500+ Posts
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    Re: Ricoh pro c751ex sc 144 and if i close the doors show sc 670

    You need a trained tech with a service manual.

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